public override ExpressionValue Evaluate(IValuesOf valuesOf)
{
var left = Left.Evaluate(valuesOf);
var right = Right.Evaluate(valuesOf);
return(new ExpressionValue(DbColumnType.Bool, left.CompareTo(Operator, right)));
}
public override ExpressionValue Evaluate(IValuesOf valuesOf)
{
//if you reach here, there's a big bug
throw new NotImplementedException();
}
public override ExpressionValue Evaluate(IValuesOf valuesOf)
{
var columnValues = valuesOf.CurrentRow(Column.Meta.TableName);
return(new ExpressionValue(Type, columnValues[Column.Meta.Index]));
}
public override ExpressionValue Evaluate(IValuesOf valuesOf)
{
return(new ExpressionValue(Type, valueType.Item2));
}
public override ExpressionValue Evaluate(IValuesOf valuesOf)
{
return(new ExpressionValue(DbColumnType.String, Text));
}
/// <summary> /// this's used when there is no indexed column, so we have to get them from table /// </summary> /// <param name="valuesOf">function to get current row values</param> /// <returns></returns> public abstract ExpressionValue Evaluate(IValuesOf valuesOf);